Looks like I overestimated the file encryption entirely on the last BBC update. Fortunately some people still had their own “clear” versions of some programs which they could compare directly with the newly encrypted downloads, noticing that what some of us thought was a DRM scheme was actually just a simple XOR of the video stream with two repeating bytes. A quick perl script later and P Lewis, posting on Paul’s blog had a working video file just like the old scripts produced.